Network Operation
You bought a new computer with two case fans that constantly run a little loud. However, right out of the box, you notice the system is exhibiting intermittent problems. You go into the BIOS and observe the CPU temperature is 100 degrees Fahrenheit (38 degrees Celsius). Which of the following best describes the thought process you should employ in your troubleshooting efforts?
Consider troubleshooting issues and possibilities that are not necessarily related to cooling.
When you turn on your computer for the day, you notice lights and fans but no beeps and no video. The Num Lock light does not come on.What might be the problem with your computer? (Select all that apply.)
Moherboard has failed
James added a new video card and needs to get a power supply that will have enough power to run the new card.When researching the new power supply, what feature does James need to look for to make sure he has enough power to run his computer with the new video card?
Wattage
Gwen recently purchased a new video card, and after she installed it, she realized she did not have the correct connections and was not able to power the video card.What connector(s) should Gwen look for when purchasing a new power supply? (Select all that apply.)
8-pin PCI-E connector and 6-pin PCI-E connector
Kiera is building a new computer and wants to make sure she has an adequate power supply for all the new components she is purchasing. She will be installing three HDDs, with each using 25 watts. The processor she is using will need 125 watts. The motherboard will use 80 watts. RAM will require 3 watts for each of the four DDR3 DIMM modules. Her video card will need 400 watts to run at the maximum level. She wants to keep the cost as low as possible for the power supply.Which power supply would you recommend?
900W power supply
You are troubleshooting a serious issue for a friend because their computer does not boot up properly.What method should be employed to ensure the user's data is protected?
Connect the drive to another computer and copy the data to another storage media.
Rebecca completed work on a computer and is verifying the functionality of the system when she finds a new problem. This problem is not urgent and can be easily fixed. The policy at Rebecca's company is that all problems need to be reported and given a priority code before they can be assigned to someone.What should Rebecca do about this new problem?
Determine whether fixing the first problem caused the second problem.
William has been working on a problem with a computer at his company for several hours and still can't ascertain the problem. The computer will not turn on, and William has tried everything he can think of to fix the computer. He has replaced the power cord, the power supply, and even the power strip the computer is plugged into. William decides that it must be the motherboard and takes the computer to his shop to replace the motherboard on the computer. When he plugs the computer in, it turns on. The problem was not the computer-someone had turned off the switch for the wall outlet that the power strip was plugged into.At which step in the troubleshooting process could William have discovered this problem?
Examine the system and making a best guess. Interview the user and up backup data. Test the theory to determine cause
Heather needs to fix a computer at her worksite. At which step in the troubleshooting process is she most likely to attempt to reproduce the problem.
Examining the System and Making Your Best Guess
A system has been having intermittent problems. Miya decides to measure the output voltage of the power supply. The voltage exceeds the expected value by an unreasonable amount.What is the most likely consequence?
Excessive voltage will damage the motherboard
Dakota uses a power supply tester to examine the power supply on a friend's desktop computer that is exhibiting problems. The tester measured a 7 V reading from the +12 V output.Which devices are most likely to be affected by this deficiency? Select two.
Graphics Cards and SATA Drivers
Henry is having a problem with the electrical system on his current laptop. The battery for the laptop will not charge. Henry took the AC adapter and battery from another laptop that is known to work, and put them in his current laptop, but still the battery will not charge.What possible actions can Henry take to make his laptop usable? (Select all that apply.)
Henry can replace the laptop system board. Henry can purchase a new laptop. Henry can use the laptop only when it's connected to the power using the AC adapter.
When you verify a fix, you determine that the problem could have been prevented. What should you do to help the user avoid having the same problem again?
Instruct the user on how to prevent the problem.
Which of the following method is not typically used to keep a computer system cool?
Keeping the case open
Larry got a new job and moved from New York to Hawaii. After a couple of weeks, he notices that occasionally, the time, date, and time zone are all wrong. He has no idea what is happening and believes it is because he moved to a different time zone.What is likely to be causing the problem?
Larry didn't set the time on his computer after he moved.
You have an eight-year-old computer with all the original components still in place. The power supply fan seems to be going bad, so you start troubleshooting. You replace the power supply, but the fan continues to have the same problem. You then disconnect all the other components except the motherboard. Only under this condition does the fan works as expected.Which of the following is most likely to be true?
One of the other components was causing a short and drawing too much power.
Your computer system loses power while you are working on a project for a very important client. When the computer restarts, you hear continuous short beeps coming from your computer, and the monitor is showing no signal.What do the beeps mean?
POST has failed, and you should research the BIOS beep codes. And POST has passed, and your computer is working properly; you should check the video cable.
Thomas came into work this morning and turned on his computer but nothing happened. He immediately called the help desk, and you were sent to fix his computer. While talking with Thomas about his computer, you find out that when he turns on the computer, he has lights and fans, but nothing else happens. He also tells you that the four memory modules were recently upgraded. Besides the memory, nothing else has been added or changed. You decide to try to re-create the problem, and when you turn on the computer, there are lights and fans, but no beeps and no video. You notice that the keyboard light does not come on.What can you determine about the problem with Thomas's computer? (Select all that apply.)
Power supply is not working properly. And Motherboard has failed.
Lin is booting up his computer. Sometimes during the boot process, the computer will shut down, but more often than not it will reboot on its own or simply freeze. He thinks the problem could be due to an intermittent undervoltage problem with the power supply, so he uses a power supply tester. The test shows that the power supply is functioning properly.What should Lin check next in the troubleshooting process?
RAM
You notice that your computer is running slow and decide to reboot the computer to see if that will fix the problem. During the reboot, you notice that the amount of RAM shown during the RAM count is not the same as it was the day before.What might cause this problem?
RAM module has become unseated.
George is involved with a project at work. Over the last few weeks, he has noticed a gradual but significant degradation in performance when running his AutoCAD program. He calls the technician and asks him to check his computer. The technician tells George to reboot the computer and asks George how much RAM was detected. The amount of RAM reported is exactly as expected.What hardware could be causing this problem? Select two.
RAM. Motherboard
While you are working on your computer, it shuts down unexpectedly, and you detect a burning smell. When you remove the case cover, you notice a distended capacitor. What can you do to fix this problem?
Replace the motherboard
Sara is having a tough time finding the cause of a problem on a computer she is troubleshooting. She found a possible problem but is not sure if she is correct. In case she is wrong, Sara does not want to test her theory, because doing so might worsen the problem.What would you advise Sara to do?
Research the problem on the Internet.
Sara works in the IT department for a large retail store. She has been testing a theory about why an error message keeps popping up on a coworker's computer when they try to start Windows. She has hit a wall and doesn't know where to look next. Sara feels very frustrated with the problem.What should Sara do to help work out the solution?
Take a break and come back later
Abdel, an electrician, does not know much about computers so he orders a custom computer with a 1000 W power supply. However, the maximum wattage the system needs is 500 W.
The 1000 W power supply will last longer than, for example, a 750 W power supply. And The power supply will only deliver up to 500 W of power and operate very efficiently.
Li, a helpdesk technician, is troubleshooting a system. Based on experience, Li has narrowed down the problem and believes it is related to either the motherboard, processor, or RAM. Which symptoms would have allowed Li to narrow down the problem? Select three.
The system reports less memory than is installed. The system begins to boot but then powers down. An error message is displayed while booting.
Tania is examining a system because the user claims their Word documents are getting corrupt.What is a reasonable best guess as a starting point?
The user is not saving the files properly.
You decide to add three new hard drives to your computer so that you can increase the amount of storage on it. When you install the hard drives, you find enough SATA connections on the motherboard, but it is short one SATA power connector.What is the easiest way to add a SATA power connector to the system?
Use a Molex to SATA power adapter
Your laptop at home is exhibiting intermittent problems and you suspect it could be related to power.How can you verify the power adapter is supplying the proper voltage?
Use a multimeter. Place the red probe of the multimeter in the center of the DC connector and the black probe on the outside cylinder.
Your customer wants to build a new computer and needs to make sure he orders the correct power supply for his machine.What should you tell him to check to make sure he orders the correct power supply? (Select all that apply.)
Wattage Requirements, Form Factor, Number of Hard Drives, Video Requirements
